US2950000A - Endless conveyor with articulating sidewalls - Google Patents

Description

Aug. 23, 1960 c. F. RIVERS I 7 2,950,000

ENDLESS CONVEYOR WITH ARTICULATING SIDEWALLS Filed Oct. 6, 1958 2 Sheets-Sheet 2 INVENTOR. CHARLES E RIVERS A 7'7'0/PNEY tates ENDLESS CONVEYOR WITH ARTICULATING SIDEWALLS Filed Oct. 6, H58, Ser. No. 765,377

2 Claims. (Cl. 198-196) This invention relates to side walls for endless flexible conveyors and particularly to side walls comprised of a series of overlapping plates adapted to the flexibility of said conveyors.

An extremely troublesome problem in prior constructions is the undesired and destructive intrusion between the lapping portions of the side wall plates of parts or particles of material being conveyed. Such material may include sharp pointed objects in various stages of machin ing, or scrap metal having sharp corners and edges which engage between the lapping portions. This intrusion results in lateral bending, distortion and separation of said portions, which defects are rapidly increased by lodgement of further objects in the openings thus created. Within a short time of installation portions of the side Walls and conveyor pans are literally torn from the conveyor, such deterioration requiring conveyor replacement with undue frequency.

An object of this invention is to provide an endless conveyor with side walls, each side wall comprised of a succession of plates in end to end relationship, and having their adjacent ends respectively formed with convex and concave arcs having a common center to aiTord said plates relative articulation about said center.

A further object is to provide each plate with an extension, ofiset in a plane parallel to said plate and lapping an end portion of an adjacent plate to reinforce said portion against lateral bending.

A further object is to jointly pivotally engage said lapped extension and end portion with a pin about which said articulation occurs.

These and various other objects are attained in the Patented Aug. 23, 1960 rearwardly beyond the concavely arcuate rear end of the construction hereinafter described and illustrated inthe accompanying drawings, wherein:

Fig. 1 is a top plan view of the construction showing a portion of an upper, substantially horizontal span of a conveyor and side walls.

Fig. 2 is a fragmentary longitudinal vertical section of a conveyor and side wall showing articulation. of the plates as the conveyor passes around a sprocket.

Fig. 3 is a top edge view showing a welded construction of a side wall plate.

Fig. 4 is a side view of such a plate showing the face thereof presented to a conveyor. 1

In these views the reference character 1 designates flat pans or plates disposed in endless succession. The opposite ends of the plates are respectively formed with hinge barrels 2 and 3, and the adjacent ends of the plates are pivotally joined by pins 4 inserted in such barrels, thus forming a continuous conveyor. The end portions of such pins journal rollers 5, and pivotally interconnect the end portions of links 6 of chains, disposed on each side of the conveyor. Each chain is designed to be mounted on a sprocket wheel 7 which may be rotatively driven by any suitable power source (not shown).

A succession of plates 8 is disposed at each side of the conveyor, to form a side wall and each plate is respectively positioned at an edge of a respective pan plate 8 to lap the front end portion of the next succeeding plate s, and pivotally engage the pin 4 which mounts said portion. Such plate 9 strongly reinforces said front end portion against lateral bending, and further serves to support the rear end of the welded assembly.

As best seen in the upper span of the conveyor as illustrated in Fig. 2, the transverse relation of theplates 8 and 10 to the pans 1 leaves lower portions of said plates extending beneath such pans, which portions further increase the resistance of the plates to lateral bending. Where greater durability is desired, each plate may be welded to its associated pan 1, or otherwise secured thereto.

As clearly disclosed in Fig. 2, the construction affords relative articulation of the plates about the axes of the' pins 4 as the conveyor passes over a sprocket wheel. The mated, arcuate, adjacent ends of the respective plates maintain a continuous inner surface of the wall even during such articulation. convexly arcuate front end 9 of each plate may be downwardly continued as at 11 to any extent necessary to prevent its lower edge from passing above the carrying surface of a pan during a desired degree of articulation. It is understood that the side wall plates may be formed in one piece by stamping rather than welding.

The illustrated closely fitting relation of the arcuately formed ends of the plates 8 will seldom be required. But even where a space is permissible between such ends, leaving a circularly arcuate slit therebetween, the lapping extension 10 prevents lateral escape of material from the conveyor. Further, anysmall or sharply pointed objects which might lodge in such an arcuate slit can gain no plate bending engagement behind the convexly formed front end 9 of the plates due to said extensions. In passing over the sprocket wheel 7, the arcuate ends articulate, sliding relative to any such aforementioned objects, which may drop freely from the conveyor, as intended.

It will readily be understood that the improved side wall hereinbefore described is not limited to use with the illustrated conveyor-belt, but is adaptable to any flexiblebelt conveyor which provides or may be provided with pins 4 or their equivalent.

What I claim is:

1. An endless conveyor including a succession of flat pans in end-to-end relationship, pins pivotally interconnecting the adjacent ends of the pans, means including a revolubly mounted sprocket wheel for operably supporting said conveyor, said pans having substantially parallel edges, a side wall including a succession of substantially rectangular plates respectively elongated along the edge of the respective pans, each plate in a plane transverse to and intersected by the plane of such pan, each plate having a forward and rearward end, the rearward end portion being offset to lap the forward end portion of the succeeding plate, said lapped portions being pivotally engaged with one of said pins for relative articulation about said pin, the forward end of said plate having the form of a convexly circular are closely conforming to a mating are formed on the preceding plate to aiford said articulation and present a substantially con- It is to be observed that the tinuous unbroken wall face to said conveyor, said plates having substantially parallel longitudinal edges, the forward end of each plate having a portion protruding from one of said edges, and said convexly arcuate form being extended to said protruding portion, whereby said portion maintains said substantially unbroken wall face during travel of said conveyor about the axis of said sprocket wheel.

2. An endless conveyor including a flexible conveying element, means for operably supporting said element, a side wall including a succession of plates respectively disposed at an edge of said element, each plate having a forward and rearward end, the rearward end portion being oifset to lap the forward end portion of the succeeding plate, means pivotally engaging said lapped portions, for relative articulation about a pivotal axis, the forward end of said plate having the form of a convexly circular are closely conforming to a mating are References Cited in the file of this patent UNITED STATES PATENTS 2,121,298 Komarek June 21, 1938 2,416,634 McBride Feb. 25, 1947 2,428,887 Munro Oct. 14, 1947 FOREIGN PATENTS 286,589 Germany Aug. 13, 1915 all.

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